﻿var cookieClass = function () {

    this.setCookie = function (name, value)//两个参数，一个是cookie的名子，一个是值
    {
        var Days = 30; //此 cookie 将被保存 30 天
        var exp = new Date();    //new Date("December 31, 9998");
        exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);
        document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString() + ";path=/";
    }
    this.getCookie = function (name)//取cookies函数        
    {
        var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
        if (arr != null) return unescape(arr[2]); return null;

    }
    this.delCookie = function (name)//删除cookie
    {
        var exp = new Date();
        exp.setTime(exp.getTime() - 1);
        var cval = cookieCls.getCookie(name);
        if (cval != null) document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString() + ";path=/";
    }
};

var cookieCls = new cookieClass();